| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
It is known that accumulated nitrogen in vegetative organs is remobilized to the seed during seed filling to compensate for the short of nitrogen supply from root system in soybean. This research revealed that this nitrogen remobilization occured at the mid of seed filling (R6), and this remobilization relating with leaf senescence could be hastened or delayed by manipulating soil nitrogen supply. Furthermore, it is also found that the expression of GmATG8c, an autophagy relating gene was synchronized with this nitrogen remobilization. These results suggest that monocarpic senescence in soybean could be controled by the balance of nitrogen demand and supply during seed filling.
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